dsh-humanized-deepseek-maid: Apply a configurable Whale Girl maid persona to DeepSeek Harness

Preface: If you use the DeepSeek Harness (hereinafter referred to as DSH) web interface for daily conversation, you have likely encountered two issues: First, instability in self-reference and addressing—despite writing in the system prompt something like "I call myself [X] and address the user as [Y]," the model begins to drift after just a few turns of context. Second, a lack of memory: every new session requires a self-introduction from scratch. A common workaround is to stuff role settings into the system prompt, but such writing is easily overwritten by subsequent context and fails to manage memory. The plugin introduced below, dsh-humanized-deepseek-maid, addresses both of these issues: it features forced self-reference/addressing, immersive roleplay, lightweight long-term memory, and personality growth—all configurable via the Web UI settings card.